Engraving mechanism



;Jul 15, 1

L. S. CASTONGUAY ENGRAVING MECHANISM Filed Jan. 19. 1926 5 Sheets-Sheet Layer 8. Castaryuqy July 15 1930.

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a fa {5 Aida-keys Z eye:- 5. C ca: 8022 Filed Jan. 19, 1926 5 Sheets-Sheet 5 ze er .iCastanyvay lavender I Q M Patented July 15, 1930 cure s'rArrs LEGE-R' s. CASTONGUAY, or AKRON, onro, Assrenon, BY MEsNn Ass renivrnnrs, 'r'o' HADLEY r. FREEMAN, er IJAKEWOCD; oHIo FENGRAVING M'Ecminrsnr Application filed January 1a i926; 's'ie'riaifn'd. 82382.

My invention relates to engraving mecha-' nism particularly of the type employed for cutting the design in tire molds'a-nd' the principal object of my invention is to provide new and improved mechanism of this type. In the drawings accompanying this specification and forming a part of this application I have shown for purposes of illustration, one form which my invention may assume. In these drawings:

Figure 1 is a plan View of this illustrative embodiment of my invention,

Figure 2 isa View partly in side elevation and partly in vertical section showing one of the engraving units and the'connection thereof to the coordinating unit,

Figure 3 is a similar view showing the control unit. and the connection thereof to the coordinatingunit, Y r V s Figure 4 1s a fragmentary front elevation of one of the cutting. units,

Figure 5'is a plan view of the controlunit, Figures 6 and 7 are sections of the control unit on the lines 6 -63 and 7-7 of Figure 5,

Figure 8 is an enlarged view of the cutting head, while I Figure 9 is a section on the line 99 of Figure 8. i

The engraving mechanism herein shown comprises a plurality of engraving units A, a coordinating unit B, andfla controlnnit C, the engraving units A and control unit 0 being arranged in an annulus about the coordinating unit B each suitably connected thereto, and thewhole supported if desired upon a single sub-base D.

Each of the cutting unlts A comprlses' a base 21 elongated radially of the coordinating unit B and provided at its inner end with a table 22 surmounted by a work support 23 rotatably mounted on the table, 22 by means of an annular boss 24-providedon the lower face of the work support 23and extending into and riding in an annular groove 25" in the upper face ofv the table 22.

At its outer end the base with a radially extending guideway 26 on screw 28 rotatable in the base 21 and engag 21 is provided ing ainut element (not shownjfintegral with the bracket 27 to thus advance and retrat thebracket 27 upon rotationiofthe screw 28 by means o'fithe hand wheel 295' Positioned on the inner face'ofthe'bracket 27"isf 'ai vertical guideway 30 on: which no is mounted a'su'pport 81 reciprocable'along the guideway 30 by means of a screw sad-Gramm V ii'ritsbore a sleeve 43fwhich in turnae'ts as'a;

bearing for a shaft 44 carrying at its lower enda 'cutt'e'r element 45 rotated fro n'anfel'ectrio motor 46 by means of a bumTt-iansmit: tingfthe rotationof the motor from theniot'or pulley 48'to apulley 49 carried byj'ashaft 50 carrying at its inner end a "bevel gear- 51 meshing with a b evel gear 52splinedto the 1 reduced extension 53 of the shaft 44 the reducedfen'tension53 of the 'shaft'44 being guided in wearin 5'4 carriedby a bracket 55'extending'froni the upper end of the'tubular casin -:41 and also comprising the sleeve {ineffective to support the shaft 50 carrying a c lefsign'wherein each elementi extends totliecenterline Of the mold 'itwould be 'possihle to'main'ta'in the cutter 45' advanced at all times and to make the entire cut milling wit-lithe peripheral face of the cutter 45but with a' de'sign in which everyelement'doesnoteXtendto the'center line ofthe mold it is c @ssenr'iarthat the initialicut in each such elementliemade by the cutter 45 by a drilling actioiias theicutter moves to 'its advanced position from a previously retracted position. ,A'sfa' tt'er of fact it is also convenient to'utilize thissanieaction incutting' a design where every element does extend to the center line of the mold.

In order to permit this advance of the cutter 45 I mount the sleeve 43 for reciproca- 5 tion within the tubular casing 41 and elongate the spline on the extension 53 of the shaft 44 so that the extension 53 may slide within the bevel gear 52 and the entire shaft 44 and sleeve 43 may slide within the tubular casing 41, and, in addition, I provide means for accomplishing this reciprocation of the shaft 44 and the sleeve 43, this means being herein shown as an arm 57 pivotally mounted at 58 on a bracket 59 carried by the upper end of the tubular casing 41, restrained in its movement upwardly by means of a set screw 60 adjustabhy mounted in a lu 61 carried by anarm 62 xedly supported by the bracket 59, movable upwardly against the set screw 60 by means of an air cylinder 63 extending between the arm 57 and a bracket- 64 extending from the lower end of the tubular casing 41, biased downwardly away from the set serew60 b means of a tension spring 165 also exten ing between the arm 57 and the bracket 64, and transmitting this movement to the sleeve 43 by means of an integral sector 65 extending through an aperture 66 in the tubular casing 41 into mesh with a rack 67 carried by the adjacent surface of the sleeve 43.

Oscillation of the cutter head 40, on the trunnions 39 and to advance the tool 45 latrally into the work, is imparted to the cutter head 40 by means of a sector 68 secured to the upper end of the casing 41 adjacent the junction of the bracket 55 and operated by a gear 69 carried by a shaft 70 mounted in a bearing 71 in the plate 35 and carrying also a gear 72 meshing with a sector 73 pivoted at 74 to the plate 35 and operable by means of a lever 75 also pivoted at 74 to the plate 35 and secured to the sector 73 by meansof a pair of machine screws 76 extending into the sector 73 through a slot 77 in the arm 75.

V In order to maintain, during the swinging of the cutter head 40, the drivin connection between the motor pulley 48 an the driven pulley 49 carried by the shaft 50 mounted in thebracket 55 on the cutter head 40, the motor 46 is mounted upon an arm 78 pivoted to a bracket 79 rising from the support 31 and the motor 46 is connected to the cutter head 40 by means of a strut 80 pivotally connected to the motor concentrically with the shaft 81 of the pulley 48 and to the cutter head 40 concentrically with the shaft- 50 of the pulley 49 and accordingly effective to swing the motor su porting arm 78 about its pivot on the brac et 79 to maintain the centers of the motor pulley 48 and driven pulley 49 at all times a fixed and constant distance apart, and to thus preserve the operating connection between the motor 46 and the cutter head 40 regardless of the oscillation of the cutter head 40.

The air cylinders 63 are all operated in unison by connection to a single supply line 140 controlled by a single valve 141, the work supports 23 are all rotated in unison by being directly geared to the upper element 82 of the coordinating unit B, the arms 75 and the cutter heads 40 are all oscillated in unison by means of links 83 extending between the lower ends of the levers 75 and lu s 84 disposed about the periphery of the lbwer element 85 of the coordinating unit B, and variations in angular position of the cutter heads 40 of the various engraving units A due to variation in position of the support 31 on the bracket 27, or of the bracket 27 on the base 21, are eliminated by adjustment of the segment 73 relativeto the lever 75 by means of the machine screws 76 and the slot 77.

The lower element 85 of the coordinating unit B is rotatably supported upon the base 86 by means of an annular rib 87 formed on the lower face of the lower element 85 and riding in a cooperating annular groove 88 formed in the base 86, the intermediate element 89 of the coordinating unitBis rotatably mounted upon the lower element- 85 by means of an annular rib 90 formed upon the upper face of the lower element 85 and ridin in a cooperating annular groove 91 formed in the lower face of the intermediate element 89, the upper element 82 is rotatably mounted upon the intermediate element 85 by means of an annular rib 92 formed upon the lower face of the upper element 82- and riding in a cooperating groove 93 formed in the upper face of the intermediate element 89, while the three elements 82 and 89 and 85 are all held against displacement by means of the overlying head 94 of a tie member 95 extending and connected to the base 86 through apertures 96 and 97 and 98 in the elements 82 and 89 and 85. y

The control unit herein shown comprises a pedestal 99 provided on its upper face with a transverse guideway 100 in which is reciprocably mounted a pattern plate carrier 101 reciprocable in the guideway 100 by means of a screw 102 rotatably supported in the pedestal 99 and engaging the screw-threaded aperture 103 in the lug 104 depending from the pattern late carrier 101 to reciprocate the pattern p ate carrier 101 as the screw 102 is rotated by means of the hand wheel 105, this reciprocation of the pattern plate carrier 101 being transmitted to the intermediate element 89 of the coordinating unit B by means of an arm 106 extending from the intermediate element 89 to a point heneath one end'of the pattern plate carrier 101 where it is connected to the pattern plate 031%1181 101 by means of a suitable pivot pin 10 Also mounted in the pedestal 99 is a second guideway 108 supporting a slide 109 provided with a bracket 110 extending to a point above the pattern plate carrier 101, and reciprocable in the guideway 108 by means of a screw 111 rotatable in the pedestal 99 and engaging the screw-threaded aperture 112 in a lug 113 extending from the slide 109 to thus advance and retract the slide 109 as the screw 111 is rotated by means of a hand wheel 11 1, this advance and retraction of the slide 109 being transmitted to the lower element of the coordinating unit B, and translated into rotation of this lower element 85, by means of a link 115 extending between a lug 116 projecting from the lower element 85 and a. lug 117 integral with the slide 109 and bracket 110. a

From the above description it will be obvious to those skilled in the art that operation of the slide 109 by the hand wheel 11 1 will oscillate the lower element 85 of the co ordinating unit B to oscillate in unison the cutter heads 40 of the engraving units A, and, if we may assume for the present that the upper element 82 of the intermediate unit B is unitary with the intermediate element 89 of the coordinating unit B, that operation of the pattern plate carrier 101 by means of the hand wheel will oscillate the upper element 82 of the coordinating unit B to thus oscillate in unison the work supports 23 of all the engraving units A.

Under these circumstances it is of course obvious that exactly the same design will be cut on each unit A.

It will of course be obvious to those skilled in the art that under these circumstances it is entirely possible to cut the desired design by manual coordination of the oscillations of the work supports23 and the cutter heads 10, and also that under certain circumstances it may be desirable to coordinate these oscil-. lat-ions manually. Under many circumstances, however, a mechanical coordination is preferable and I therefore provide such coordination herein by coordinating the actuation which may be imparted to the work 7 supports 23 and the cutter heads' LO by the two actuating devices on the control unit C, the pattern plate c'arrler 101 and the hand wheel 105 in the one case, and the slide 109 and hand wheel 11 1 in the other case, this coordination being herein efiected by providing on the bracket of the slide 109 a depending pin 118 arranged to extend within the cavity 119 of a pattern plate 120 secured in a recess 121 in the pattern plate carrier 23 and cutter heads 410, to within the limits of the design desired to be cut by each of the cutting units A.

It will be understood that with such an arrangement the actuating devices are operated until the cutting tools 45 have cut out the entire substance within the limits of the desired design, that the control herein shown is not automatic in the sense that it itself causes the oscillations of the work supports and cutter heads necessary to out the desired design, but on the contrary that the control ierein shown merely limits the cutting to the limits of the desired design and leaves the oscillation of the work supports 23 and cutter heads 10 to be effected by the operator within these limits by operation of the hand wheels 105 and 114.

In the above discussion of the operation of the device the elements 82 and 89 of the coordinating unit B have been assumed to be integral, and were each of the cutting units A to be called upon to out the design but a single time such a construction would be entirely satisfactory. In engraving a tire mold, however, it is necessary to repeat the design many times about the periphery of the mold and accordingly a machine for that use must be so constructed that the upper element 82 connected to the work supports 23 does move exactly with the intermediate element 89 during the cutting of any one design to accurately transmit to each work support 23 the actuations of the pattern plate carrier 101, but is movable relative to the intermediate element 89 to space the work supports 23 between successive repetitions of the design.

In the embodiment of my invention hereinshown I accomplish this result by providin on the upper element 82 a worm gear 123 permanently in engagement with a worm 124 carried by a shaft 125 mounted in lugs 126 carried by the arm 106 connecting the intermediate element 89 with the pattern carrier 101, and I provide for the operation of this worm 12 by means of a bevel gear 127 mounted on the shaft 125 and engaging a cooperating bevel gear 128 mounted on a shaft 129 supported at one end in a bracket,

130 rising from the'arm 106 and at the other end in a plate 131 also rising from the arm 106 and supporting additionally a spacing mechanism consisting of a lever 132 pivotally' mounted on the plate 131, provided with a handle 133 comprising a stop pin 13-1 arranged to seat within an aperture 135 in the plate 131 to hold the arm 132 against rotation, and provided also with a gear 136 formed integral with the lever 132 and connected through an intermediate gear 137 to a gear 138 carried by the shaft 129 extending to and operating the worm 124, the interme diate gear 137 being employed to permit of the use of a wide variety of change gears to provide a wide range in the angle through lie which the work supports 23 are spaced to thus provide a wide variation in the number of times the design may be repeated in a single mold.

To those skilled in the art it will be obvious that the upper element 82 is locked to the intermediate element 89 when the worm 124 is locked against rotation by the presence of the pin 134 in the recess 135, and that under this condition the actuation of the intermediate element 89 is transmitted directly to the upper element 82 and the work supports 23, but that, after the completion of each design, the worm 124 may be rotated a predetermined amount, variable by change in the gearing 136. 137, and 138, to thus advance the upper element 82 and the work tables 23a unit amount equal to the spacing between successive designs.

From the above description it will be ob vious to those skilled in the art that I have provided engraving mechanism of the type suitable for engraving tire molds and operable to actuate all of the work tables in unison and all of the cutter heads in unison to engrave a plurality of molds in unison by a single operator from a single control and actuating apparatus. Under these circumstances it will be obvious to those skilled in the art that I have provided engraving mechanism possessing advantages not possessed by engraving mechanism heretofore known.

At the same time, it will also be obvious to those skilled in the art that the particular embodiment of my invention herein shown and described may be variously changed and modified without sacrificing any or all of the advantages of my invention or departing from the scope thereof. It will therefore be understood that the disclosure herein is illustrative only and that my invention is not limited thereto.

I claim:

1. Engraving mechanism comprising a plurality of units each comprising a work support, a cutter, and supporting means supporting said work support and said cutter for relative movement twodimensional along the surface of the blank being engraved; common actuating means for effecting such movement in all of said units in unison; and common control means comprising cooperating pattern members and efiective to limit the operations of said actuating means to producing such movement only within the limits of a design predetermined by the cooperating characteristics of said pattern members.

2. Engraving mechanism comprising a plurality of units each comprising a work support, a cutter, and supporting means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; a

first common actuating means for effecting such movement in all of said units in one dimension and in unison; a second common actuating means for effecting such movement in all of said units in the other dimension and in unison; and common control means, comprising two cooperating pattern members each operatively connected to one of said two actuating means, effective to limit the operations of said two actuating means to producing such movements only within the limits of a design predetermined by the cooperating characteristics of said two pattern members.

3. En raving mechanism comprising a plurality of units each comprising a work support, a cutter, and supporting means for supporting said work support and said cutter for relative movement two-dimensional alon the surface of the blank being engraved an effected by movement of said work support in one dimension and movement of said cutter in the other dimension; common actuating means for effecting each of said movements in all of said units in unison; and common control means comprising cooperating pattern members and effective to limit the operation of said actuating means to producing such movements only within the limits of a design predetermined by the coo crating characteristics of said pattern mem ers.

4. En raving mechanism comprising a plurality 0% units each comprising a work support, a cutter, and supporting means for supporting said work support and said cutter for relative movement two-dimensional alon the surface of the blank being engraved an effected by rotation of said work support and oscillation of said cutter in a plane disposed at a substantial angle to the direction of movement of said work support at the cutting point; common actuating means for effecting each of said movements in all of said units in unison; and common control means comprising cooperating pattern members and effective to limit the operations of said actuating means to producing such movements only within the limits of a design predetermined by the cooperating characteristics of said pattern members.

5. En aving mechanism comprising a plurality 0 units each comprising a work support, a cutter, and supporting means supportmg said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved and effected by movement of said work support in one dimension and movement of said cutter in the other dimension; a first common actuating means for eflecting such work support movement in all of said units in unison; a second common actuating means for effecting such cutter movement in all of said units in unison; and common control means, comprising two cooperating pattern members each operatively connected to one of said two actuating means, effective to limit the operations of said two actuating means to producing such movements only within theflimits of a design predetermined by the cooperating characteristics of said two pattern members.

6. En raying mechanism comprising a plurality or units each comprising a work support, a cutter, and supporting means for supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engravedand effected by rotation of said work support and oscillation of said cutter in a plane disposed at a substantial angle to the direction of movement of said work support at the cutting point; a first common actuating means for effecting such work support rotation in all of said units in unison; a second common actuating means for efiecting such cutter oscillation in all of said units in unison; and common control means, comprising two cooperating pattern members each operatively connected to one of said two actuating means,

effective to limit the operations of said two actuating means to producing such rotation and oscillation only within the limits of a design predetermined by the cooperating characteristics of said pattern. members.

7. Engravingmechanism comprising a plurality of units each comprising a work-support, a cutter, and means supporting said work-support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; common actuating means for effecting such relative two-dimensional movement in all of said units in unison but only to a limited extent for the engraving of a limited design; and common spacing means effective to periodically produce additional such relative movement in all of said units in unison for periodically spacing all of said units in unison for the repetition of such design.

'8. Engraving mechanism comprising a plurality of units each comprising a work support element, a cutter element, and means supporting said elements for relative move ment thereof two-dimensional along the surface of the blank being engraved; common actuating means for effecting such relative two-dimensional movement in all of said units in unison but only to a limited extent for the engraving of a limited design; and common spacing means efiective to periodically produce additional such relative movement in one of said elements already movable by said actuating means and in all of said units in unison for periodically spacing all of said units in unison for the repetition of such design.

9. Engraving mechanism comprising a plurality of units each comprising a work support, a cutter,- and means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; common actuating means for effecting such relative two-dimensional movement in all of said units in unison but only to a limited extent for the engraving of a limited design; and common spacing means effective to continue periodically, inall of said units in unison, one of the movements produced by said actuating means to thus periodically effect additional such relative movement in all of said units in unison for periodically spacing all of said units in unison for the repetition of such design.

10. Engraving mechanism comprising a plurality of units each comprising a work support, a cutter, and means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; common actuating means for effecting such relative two-dimensional movement in all of said units in unison but only to a limited extent for the engraving of a limited design; and

common spacing means interposed in said actuating. means and effecting to continue periodically, in all of said units in unison, one of the movements produced by said actuatin means to thus efiect periodical additiona such relative'movement in all of said units in unison for periodically spacing all of said units in unison for the repetition of such .design.

11. Engraving mechanism comprising a plurality of units each comprising a work support, a cutter, and means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; a first common actuating means for effecting such relative movement in all of said units in one dimension and in unison; a second common actuating means for effecting such relative movement in all of said units in the other dimension and in unison; both of said actuating means being efiective only to a limited eX- tent for the engraving of a limited design; and common spacing means effective to produce, periodically in all of said units inunison, a continuation of the movement produced by that'actuating means to periodically space all of said units in unison for the repetition of such design.

12. Engraving mechanism' comprising a plurality of units each comprising a Work support, a cutter, and means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; a first common actuating means for efiecting such relative movement in all of said units in one dimension and in unison; a second common actuating means for effecting such relative movement in all .of said units in the other dimension :and' in unison; both of said actuating means being effective only to a limited extent for the engraving of a limited design; and common spacing means interposed in one of said actuating means and effective produce, periodical ,in all of said units in unison, a continuation of the movement produeed by that actuating means to periodical- 1y space all of said units in unison for the repetition of such design.

13a Engraving mechanism comprising a plurality of units each comprising a work support, a cutter, and supportin means suprting said work support an said cutter or relative movement two-dimensional along the surface of the blank being engraved; common actuating means for effecting such relative two-dimensional movement in all of said units in unison but only to a limited extent for the engraving of a limited design; common control means comprising cooperatin pattern members and effective to limit t e operations of said actuating means: to producing such two-dimensional relative movement only within the limits of a design predetermined by the cooperating characteristics of said pattern members; and common spacing means effective periodically to produce additional such relative movement in all of said units in unison for periodically spacing all of said units in unison for the repetition of said design.

14:. Engraving mechanism comprising a plurality of units each comprising a work support element, a cutter element, and supporting means supporting said elements for relative movement thereof two-dimensional along the surface of the blank being en graved; common actuating means for effecting such relative two-dimension movement in all of said units in unison but only to a limited extent for the engraving of a limited design common control means comprising cooperating pattern members and effective to limit the o rations of said actuatin means to producing such two-dimensiona relative movement only within the limits of a design predetermined by the cooperating characteristics of said pattern members; and common spacing means effective to periodically produce additional such relative movement in one of said elements already movable by said actuating means and in all of said units in unison for periodically spacing all of said units in unison for the repetition of said design.

15. Engraving mechanism comprising a plurality of units each comprising a work support, a cutter, and supporting means supporting said work support and said cutter forrelative movementtwo-dimensional along the surface of the blank bein engraved; common actuating means for e ecting such relative two-dimensional movement in all of said units in unison but only to a limited extent for the engraving of a limited, design;

common control means comprising cooperating pattern members and effective to limit the operations of said actuating means to producing such two-dimensional relative movement only within the limits of a design predetermined by the cooperating characteristics of said pattern members; and common spacing means effective to continue periodically, in all of said units in unison, one of the movements produced by said actuating means to thus periodically effect additional such relative movement in all of said units in unison for periodically spacing all of said units in unison for the repetition of said design.

16. Engraving mechanism comprising a plurality of units each comprising a work support, a cutter, and supporting means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank bein engraved; common actuating means for e ecting such relative two-dimensional movement in all of said units in unison but only to a limited extent for the engraving of a limited design; common control means comprising cooperating pattern members and effective to limit the operations of said actuating means to producing such two-dimensional relative movement only within the limits of a design predetermine by the cooperating charac teristics of said pattern members; and common spacing means interposed in said actuating means and effective to continue periodically, in all of said units in unison, one of the movements produced by said actuating means to thus periodically effect additional such relative movement in all of said units in unison for periodically spacing all of said units in unison for the repetition of said design.

17. Engraving -mechanism comprising a plurality of units each comprising a work support, a cutter, and supportin means supporting said work support and said cutter for relative movementtwo-dimensional along the surface of the blank being engraved; a first common'actuating means for effecting such relative movement in all of said units in one dimension and in unison; a second common actuating means for effecting such relative movement in all of said units in the other dimension and in unison; both of said actuating means being effective only to a limited extent for the engraving of a limited design; common control means, comprising cooperating pattern members each operatively connected to one of said actuating means, effective to limit the operations of said actuating means to producing such movements only within the limits of a design predetermined by the cooperating characteristics of said pattern members; and common spacing means effective to produce periodically, in all of said units in unison,

first common actuating means for effecting such relative movement in all of said units in one dimension and in unison; a second common actuating means for effecting such relative movement in all of said units in the other dimension and in unison; both of said actuating means being eifective only to a limited extent for the engraving of a limited design; common control means, comprising cooperating pattern members each operatively connected to one of said actuating means,effective to limit the operations of said actuating means to producing such movements only Within the limits of a design predetermined by the cooperating characteristics of said pattern members; and common spacing means interposed in one of said actuating means and effective to produce periodically, in all of said units in unison, a continuation of the movement produced by that actuating means to periodically space all of said units in unison for the repetition of said design.

19. Engraving mechanism comprising a plurality of units each comprising a Work support, a cutter, and supporting means supporting said Work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved and effected by movement of said Work support in one dimension and said cutter in the other dimension; a first common actuating means for effecting such relative movement in all of said Work supports in unison; a second common actuating means for effecting such relative movement in all of said cutters in unison; both of said actuating means being effective only to a limited extent for the engraving of a limited design; common control means, comprising cooperating pattern members each operatively connected to one of said actuating means, eifective to limit the operations of said actuating means to producing such movements only within the limits of a design predetermined by the cooperating characteristics of said pattern members; and common spacing means effective to produce periodically, in all of said units in unison, a continuation of the movement of the Work supports produced by said first actuating means to periodically space all of said Work supports in unison for the repetition of said design.

20. Engraving mechanism comprising a plurality of units each comprising a Work support, a cutter, and supporting means supporting said Work support and said cutter for relative movement two-dimensionalalong the surface of the blank being engraved and eifected by movement of said Work support in one dimension and said cutter in the other dimension; a iirstcommon actuating means for effecting such relative movement in all of said WOIk supports in unison; a second common actuating means for effecting such relative movement in all of said cutters in unison; both of said actuating means being effective only to a limited extent for the engraving of a limited designs; common control means, comprising cooperatin pattern members each operatively connected to one of said actuating means, efi'ective to limit the operations of said actuating means to producing such movements only Within the limits of a design predetermined by the cooperating characteristics of said pattern members; and common spacing means interposed in said first actuating means and effective to produce periodically, in all of said units in unison, a continuation of the movement of the Work supports produced by said first actuating means to periodically space. all of said Work supports in unison for the repetition of said design. 7

21. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and supporting means supporting said Work support and said cutter for relative movement tWodimensionalalong the surface of the blank being engraved; and common operating means, for effecting such movement in all of said units in unison, comprising annular coordinating means and connections from said coordinating means to each of said units.

22. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a Work support, a cutter, and supporting means supporting said Work support and said cutter for. relative movement two-dimensional along the surface of the blank being engraved; and common operating means, for effecting such movement in all of said units in unison, comprising annular coordinating means and connections from said coordinating means to each of said units, and effecting such movement in one dimension by rotation of asaid coordinating means transmitted to said units th'roug-hrotary connections.

23. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and supporting means supporting said Work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved, including rotation of said WOIk support; and common operating means, for effecting such movement in all of said units in unison, comprising annular coordinating means and connections from said coordinating means to each of said units, and efiecting such movement in one dimension by rotation of a said coordinating means transmitted to said units through rotary connections to rotate said work sup ports.

24. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and supporting means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; and common operating means, for effecting such movement in all of said units in unison, comprising annular coordinating means and connections from said coordinating means to each of said units, and effecting such movement in one dimension by rotation of a said coordinating means transmitted to said units throu h link and lever connections.

25. ngraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and supporting means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved, including oscillation of said cutter; and common operating means, for efi'ecting such movement in all of said units in unison, comprising annular coordinating means and connections from said coordinating means to each of said units, and efiecting such movement in one direction by rotation of a said coordinating means trans mitted to said units through link and lever connections to oscillate said cutters.

26. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and supporting means sup orting said work support and said cutter or relative movement two-dimensional along the surface of the blank being engraved; a first common operating means, for effecting such movement in all of said units in unison in one dimension, comprising a first annular coordinating means and a first set of connections from said first coordinating means to each of said units; and a second common operating means, for efiecting such movement in all of said units in unison in the other dimension, comprising a second annular coordinating means and a second set of connections from said second coordinating means to each of said units.

27. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a Work support, a cutter, and supporting means supporting said work support for rotation and said cutter for oscilation in a plane disposed at a substantial angle to the direction of movement of said work support at the cutting area to thus provide relative movement between said work support and said cutter twoalimensiona] along the surface of the blank bcin engraved; a first common operating moans, f? eflecting such rotation of said work supports all in unison, comprising a first annular W ordinating means and a first set of connections from said first coordinating means to each of said units, and operating to rotate said work supports by rotation of said first coordinating means transmitted to said work supports by rotatary connections; and a sec ond common operating means, for effecting such oscillation of said cutters all in unison, comprising a second annular coordinating means and a second set of connections from said second coordinating means to each of said units, and operating to oscillate said cutters by rotation of said second coordinating means transmitted to said work supports by link and lever connections.

28. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a Work support, a cutter, and supporting means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; common operating means, for effecting such movement in all of said units in unison, comprising annular Cuordinating means and connections from said coordinating means to each of said units; and common control means comprising cooperating pattern members and etl'ectiie to limit the actuations of said operating means to efi'ecting such movement only within the limits of a design predetermined by the cooperating charcateristics of said pattern members.

29. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and sup porting means supporting said work support and said cutter for relative movement two-dimensional along the surface of the blank being engraved; a first common operating means, for effecting such movement in all of said units in unison in one dimension, comprising a first annular coordinating means and a first set of connections from said first coordinating means to each of said units; a second common operating means. for effecting such movement in all of said units in unison in the other dimension, comprising a second annular coordinating means and a second set of connections from said second coordinating means to each of said units; and common control means, comprising two cooperating pattern members each ,operativelv connected to one of said operating means, effective to limit the actuations of said operating means to effecting such movements only within the limits of a design predetermined by the cooperating characteristics of said two pattern members.

30. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and sup porting means supporting said work support and said cutter for relative movement two-dimensional along the surface" of the blank being engraved; and common operating means, for effecting such movement in all of said units in unison, comprising annular coordinating means and connections from said coordinating means to each of said units, said annular coordinating means comprising an annular member rotatable to ef' fect such movement in all said units in one dimension and-in unison; common actuating means effective to rotate said member, and effect such movement, to a limited extent for the production in the blank of a design of limited extent; and common spacing means interposed between said actuating means and said member effective to advance said member relative to said actuatingmeans to effect additional such relative movement for spacing for the repetition of such design.

31. Engraving 'mechanism comprising a plurality of units arranged in an arc and each comprising awork support, a cutter, and supporting means supporting said work support and said cutter for relative movement two-dimensional along the surface vof the blank being engraved, said work support being supported for rotation; and common operating means, for effecting such movement in all of said units in unison, comprising an nularcoordinating means and connections from'said coordinating-means toeach of'said units, said annular coordinating means comprising an annular rotatable member and said connections comprising rotation transmitting means connecting said rotatable member to eachof said work supports where by. rotation of said rotatable member will rotate all of said work supports in unison; common actuating means effective to rotate said member and said work supports to a limited extent for the production inthe blank of a design of limitedextent; andcommon spacing means interposed between said actuating means and said member effective to advance said member relative to said actuating means to effect additional such rotation of said work supports for spacing for the repetition of such design.

.32. Engraving mechanism comprising a plurality of units arranged inan arc and each comprisinga work support, a cutter, and

supporting means supporting said work sup-.

port and said cutter forrelative movement two-dimensional along the surface of the blank-being engraved; and commonoperat ing means, for effecting such movement in all of said units in unison, comprising annular coordinating'means and connections from said coordinating means to each of said units,

- said annular coordinating means comprising an annular member rotatable :to effect ,such

to'said actuatingmeans to effect additional such relative movement for spacing for the repetition of such design, said spacing'means comprising a worm gear element mounted concentrically with said member, and a worm element coacting therewith, one of said elements being unitary with said actuating means and one with said member.

33. Engraving mechanism comprising a plurality of units arranged in an arc and each comprising a work support, a cutter, and supporting means supporting said work support and'said cutter for relative movement two-dimensional along the surface of the blank'being engraved, said: worksupport be ing supported for rotation; and commonoperating means, for effecting such movement in all of said units in unison, comprising annular coordinating means and connections from said coordinating means to each of said units, said annular coordinatingmeans com prising an annular rotatable member and said connections comprising rotationtransmitting means connecting said rotatable member to each of said work supports whereby rotation of said rotatable member will rotate all of said work supports in unison; common actuating means effective to rotate said member and said work supports to a limited extent for the production in the blank of-a design of limited extent; and common spacing means interposed between said actuating means and said member effective to advance said member relative to said actuating means to effect additional such rotation of said work supports forspacing fortherepetition of such design, said spacing means comprising a worm gear element mounted concentrically with saidmember, and a worm element coacting therewith, one of said elements being unitary with saidactuating means and one with said member. 1

34. Engraving mechanism comprising a plurality of work supports, a plurality of cutters one for each of said work supports,

supporting means supporting saidwork supports and said cutters topermit, between each work support and the cutter corresponding thereto, two-directional relative. movement laterally of that cutter, common actuating meansarrangedto effect such relative movementin'unison between each cutter and the work sup-port corresponding thereto, a common control unit, extension means extending from 'saidractuating means to said control unit,- and control means comprised within said vcontrol unit, comprising cooperating guide' members, acting on said extension means, and effective through said extension means to limit the operation of said actuating means to effecting such relative movement only within the limits of a design predetermined by the cooperating characteristics of said guide members. i

35. Engraving mechanism comprising a plurality of work supports, a plurality of cutters one for each of said work supports, supporting means supportingsaid work sup ports and said cutters topermit,'between each work support and the cutter corresponding thereto, two-directional relative movement laterally of that cutter, common actuating means arranged to effect'such relative move ment in unison between each cutter and the work support corresponding thereto, a comthan control unit, extension meansextending from said actuating means to said control unit, means carried by said control unit for operating said extension means to thus operate said actuating means, and control means comprised Within said control unit, comprising cooperatingyguide members, acting on saldvextension means, and effective through said extension means to limit the operation of said actuating means to effecting such relative movementonly within the limits of a design predetermined by the cooperating characteristics of said uide members.

Engraving; mec ianism comprising a plurhlity-ofwork supports, a plurality of cutters one for each of said work suppports, supportingmeans supporting said work supaand said cutters to permit, between each work support and the-cutter corresponding theretofitwo-directional relative movement laterally of that cutter, a-first common actuating means arranged to effect such relative movementin unison in one direction between each cutteriand the work support corresponding thereto, a second common actuating ineans arranged to-effect such relative movementin unison in the other direction between ea'chcutter and the work support correspond-c ing thereto, a common control unit, two exmem 7 tension means extending from said two actuating means to said control unit, and control means comprised within said control unit, comprising cooperating guide members, act- 'ing on said two extension means, and effective through said two extension-means, to limit "the operation of said two actuating means tolefl'ecting such relative movement only within the limits of a design predetermined be the cooperatingcharacteristics of saidrguide members. a

31." Engraving mechanism comprising a plurality of work supports, a plurality of cutters onefor each of said work supports,

supporting means supporting said work supports and said cutters to permih between each work support and the cutter correspond mg thereto, two-directional relative movement laterally oi that cutter, a first common actuating means arranged to effect such relative movement in unison in one direction between each cutter and the work support corresponding thereto, a second common actuating means arranged to effect such relative movement in unison in the otherdirection between each cutter and the work support corresponding thereto, a common control unit, two extension means extending from said two actuating means to said control unit, means carried by said control unit for operating said two extension means to thus operate said two actuating means, and control means comprised within said control unit, comprising cooperating guide members, acting on said two extension means, and effective through said two extension means to limit the operation of said two actuating means to effecting such'relative movement only within the limits of a design predetermined by the cooperating characteristics of said guic e members. a

38. Engraving mechanism comprising a plurality 0% work supports,-a plurality of cutters one for each of said work'supports, supporting means supporting said work supports and said cutters to permit, between each work support and the cutter corresponding thereto, two-directional relative move; ment laterally of that cutter, common actuating means arranged to effect such relative movement in unison between each cutter and the work support corresponding thereto, a

common control unit, extension means extending from said actuating means to said control unit, means carried by said control unit for operatingsaid extension means to thus operate said actuating means, control means comprised *within said control unit, comprising cooperating guide members, acting on said extension means, and effective throughsaid extension means to limit the operation of said actuating means to effecting such relative movement onl within the limits of a design predetermined by the cooperating characteristics of said guide members, and common spacing means also operable from said control unit and arranged to effect relative movement in unison between each cutter-rand the work support corresponding thereto to space each work support relative to thatcutter a predetermined unit distance and ready for the repetition of the design.

39..Engraving' mechanism comprising a plurality of, work supports arranged in an arc,- a plurality-of cutters one for'each of said work supports, supporting means supporting said work supports and said cutters to permit, between each work support and the cutter corresponding thereto, two-directional relative movement laterally of'that cutter,comm0n actuating means arranged to effect such relative movement in unison between each cutter and the work support corresponding thereto, and common control means for said actuating means comprising cooperating guide members and effective to limit the operation of said actuating means to effecting such relative movement only within the limits or" a design predetermined by the cooperating characteristics of said guide members.

40. Engraving mechanism comprising a plurality of work supports arranged in an arc, a plurality of cutters one for each of said work supports, supporting means supporting said work supports and said cutters to permit, between each work support and the cutter corresponding thereto, two-directional relative movement laterally of that cutter, common actuating means arranged to effect such relative movement in unison between each cutter and the work support corresponding thereto, common control means for said actuating means comprising cooperating guide members and effective to limit the operation of said actuating means to eiiecting such relative movement only within the. limits of a design predetermined by the cooperating characteristicsof' said guide members, and common spacing means arranged to efi ect relative movement in unison between each cutter and the work support corresponding thereto to space each work support relative to that cutter a predetermined unit distance and ready for the repetition of the design.

41. Engraving mechanism comprising a plurality of work supports arranged in an arc, a plurality of cutters one for each of said work supports, supporting means supporting said work supports and said cutters to permit, between each work support and the cutter corresponding thereto, two-directional relative movement laterally of that cutter, common actuating means arranged toeffect'such relative movement in unison'betwee n each cutter and the work support corresponding thereto, a common control unit, extension means extending from said actuating means to said control unit, and control means comprised within said control unit, comprising I cooperating guide members, acting on said extension means, and effective through said extension means to limit the operation of said said work supports and said cutters to permit,

between each work'support andthe cutter corresponding thereto, two-directional relative movement laterally of that cutter, common actuating means arranged to efiect such relative movement in unisonbetween each cutte and the wo kisupport corresponding thereto, a common control unit, extension means extend ng from said actuatingmeans to said control unit, means carried bysaid control unit ,for operating sald extension means to thus operate, said actuating means,

and control means comprisedwithin said: control unit, comprising cooperating guide mem- -.bers, actingon: said extension means, and effective through said extension means to limit the operation ofsaid actuating,means-to effooting such relative movement only within the limits ofa design predetermined hythe vcoopcrating. characteristics of said gu1jole members. i i

v 43. Engraving mechanism comprising a .plur-alitycf ,work supports arranged in an arc, a plurality of cutters one for each of. said work supports, supportingcmeans supporting tive to limit the operation of said actuating means to effecting such relative movement only within the limits of a design predetermined by the cooperating characteristics 0 said guide members. I

M. Engraving mechanism comprising a plurality of work supports arranged in an arc, a plurality ofv cutters one for each of said work supports, supporting means supporting said work supports and said cutters to permit, between each work supportand the cutter corresponding thereto, two-directi'onal relative movement laterally of that cutter, actuating means comprising annular means arranged to effect such relative movement in unison between each cutter and the work support corresponding thereto, actuating means for said annular means, control means for said actuating means comprising cooperating guide members and effective to limit the operation of said actuating means to effecting such relative movement only within the limits of a design predetermined by the cooperating characteristics of said guide members, and spacing means arranged to effect relative movement in unison between each,

cutter and the work support corresponding thereto to space each work support relative to that cutter a predetermined unit distance and ready for the repetition of the design.

45. Engraving mechanism comprising a plurality of work supports arranged in an arc, a plurality of cutters one for each of said work supports, supporting means supporting said work supports and said cutters to perunit, between each work support and the cutfor corresponding thereto, two-directional relative movement laterally of that cutter, annular means arranged to effect such relative movement in unison between each cutter and the work support corresponding thereto, a control unit, extension means extending from said annular means to said control unit, and control means comprised within said control unit, comprising cooperating guide 10 members, actin on said extension means, and efiective throng said extension means to limit the operation of said annular means to effecting such relative movement only within the limits of a design predetermined by the co- 1 geperating characteristics of said guide mem- 1'8. In testimony whereof I hereunto aflix my signature.

LEGER S. CASTONGUAY. 

